1. U.S. Geological Survey, Ecosystem Dynamics Branch, Fort Collins Science Center; Fort Collins Colorado USA
2. U.S. Geological Survey, New Mexico Water Science Center; Albuquerque New Mexico USA
3. U.S. Geological Survey, Eastern Energy Resources Science Center; Reston Virginia USA
4. U.S. Geological Survey, Jackson Field Research Station, Columbia Environmental Research Center; Jackson Wyoming USA
5. U.S. Geological Survey, Oklahoma Water Science Center; Oklahoma City Oklahoma USA
6. U.S. Geological Survey, Central Energy Resources Science Center; Piscataway New Jersey USA
7. U.S. Geological Survey, Kentucky Water Science Center; Louisville Kentucky USA
8. U.S. Geological Survey, Wyoming Water Science Center; Cheyenne Wyoming USA
9. U.S. Geological Survey, New York Water Science Center; Ithaca New York USA
10. U.S. Geological Survey, Arkansas Water Science Center; Little Rock Arkansas USA
11. U.S. Geological Survey, Colorado Water Science Center; Lakewood Colorado USA
12. U.S. Geological Survey, Utah Water Science Center; West Valley City Utah USA
13. U.S. Geological Survey, Central Energy Resources Science Center; Denver Colorado USA